Of Those Identical (Monozygotic) Twins Where One Twin Is Homosexual

question 73

Multiple Choice

Of those identical (monozygotic) twins where one twin is homosexual, the other twin is also homosexual in 50% of cases. This means

• A) homosexuality is determined by genetics.
• B) genes are only one influence for sexual orientation.
• C) the environment determines sexual orientation.
• D) genes are not an influence for sexual orientation.

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Definitions:

Long Run

A period in which all factors of production and costs are variable, and companies can adjust all inputs to the production process.

Market Price

The actual selling price of a good or service in the marketplace, determined by supply and demand.

Price Takers

Market participants who accept prevailing prices because they have no power to influence the market price due to their small market share.

Perfect Competition

A market structure characterized by a large number of small firms, homogeneous products, free entry and exit, and perfect information, leading to firms being price takers.